Preheat the oven to 425F. Allow the chicken to rest at room temperature for a half hour prior to baking.
Rinse the chicken and pat it dry with paper towels. Season the cavity with salt and pepper. Insert aromatics into the cavity and tie the drumsticks with kitchen twine. Bend the wings back and tuck under the bird. Using a pastry brush, butter the skin evenly and thoroughly. Season the skin generously with salt and pepper.
In a large roasting pan, toss the potatoes and garlic cloves in olive oil and season with salt and pepper. Arrange the potatoes around the chicken, creating a nest around the bird.
Roast in the oven for about 1 hour or until the internal temperature of the chicken breast is 170F. Let the chicken rest 10 minutes before carving.